Car-axle box.



No. 720,796. 1 PATENTBD FEB. 17, L903.

G. G'. FLOYD.

.CAR AXLE BOX.

APPLICATION FILED HAY 19. 1902.

UNITED STATES PATENT OFFICE.

GEORGE G. FLOYD, OF ST. LOUIS, MISSOURI.

CAR-AXLE sox.

SPECIFICATION raming pm of Letters Patene'lvo. 720,796, dated February 17, 1903. Application 'filed May 19, 1902. Serial No. 108,047. (No model.)

To @Z whom it r11/nay concern:

Be it known that I, GEORGE G. FLOYD, a

` citizen of the United States, residing in the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Car-Axle Boxes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to car-axle boxes provided with a medium through which a seat' for the cover of the box may be produced that will provide, without the use of a packing, for a close joint between the axle-box at its mouth and the cover that closes said mouth.

The invention consists in features of novelty hereinafter fully described, andpointed out in the claims.

Figure I is a front elevation oxf my axle-box. Fig. II is a vertical section taken on line II II, Fig. I. Fig. III is a horizontal section taken on line III III, Fig. II. Fig. IV is a perspective view of the cover-holding spring. Fig. V is an enlarged section of fragments of one of the side walls of the axle-box at its mouth and the cover applied thereto. Figs. VI and VII are sections similar to Fig. V, showing modifications.

l designates an axle-box that may in the main be of any common form, but which is provided at its mouth with a groove 2, that extends continuously around the mouth of the box in an enlargement 3. In said groove I place a body 4 of self-hardening substance, preferably what is known to the trade as Steel or iron cement.

5 designates the cover'that is utilized to close the mouth of the axle-box and is provided with a rib or bead 6, that extends continuously on the inner face of the cover 5 in lines corresponding to the contour of the groove 2 in the axle-box, so that said rib will enter said groove to seat in the body 4: of self-hardening substance therein. On the application of the cover to the axle-box the rib 6 is embedded in the body of self-hardening substance, as seen in Figs. II, III, and V, and the inner face of the cover being pressed against the` self hardening substance produces a seat for the cover that will correspond exactly to the contour of the inner face of the cover. In this way and without any packing I avoid the presence of gaps or crevices between the axle-box and the cover, which frequently exist in constructions where the con tact is metal to metal, owing to the unevenness of the contacting surfaces. After the original impression is made by the cover 5 in applying it to the mouth of the axle-box the body 5 hardens naturally, with the result that the impression produced is retained permanently to receive the cover, as in the first instance, in a manner to provide a close joint between the mouth of the axle-box and the cover to the exclusion of dust or dirtthat would in the existence of an open joint enter said box.

In the cover 5 is a groove that provides a shoulder 7and above said shoulder is a depression 8.

9 is a spring having'a lip lOeXtending at an angle from its lowerend and adapted to seat on the shoulder '7.` The upper end of the spring rests against a flange ll, projecting vertically from the top of the axle-box.

12 designates ears on top of the box 1, in which the hinge-bolt 13 Vof the cover is positioned.

14 designates a housing projecting outwardly from the cover 5 and adapted to receive the spring 9. The spring 9 is applied to the cover by introducing its straight end beneath the lower open end of the housing 14:, which introduction is permitted by the depression S in the cover, and the spring is then moved upwardlycuntil its upper end rests against the flange 11 and the lip 10 at its lower end rests upon theshculder '7. It will be seen that by this4 construction the spring 9 exerts pressure to hold the cover to its seat by reason of the bearing of its upper end against the ange ll, its lipped end against the cover, and the bearing contact betweenit and the lower end of the housing, as seen in Fig. I, so that the cover is held securely to the mouth of the axle-box without the need of any fastening appliance.

In Fig. VI, I have shown .a modification wherein the self-hardening body 4a, contained by the groove 2a in the Wall of the axle-box, extends beyond the edge of the axle-box wall to receive the cover 5a, which is grooved to tit the extended portion of the self-hardening substance that is shaped to fit the configuramodification is curved at its edges to t over the body of self-hardening substance.

I claim as my invention- 1. An axle-box; having a hinged coverr a i body of self-hardening plastic substance proy vided with an impression of a portion of one of said parts, and means on the other of said parts for holding the self-hardening material.

2. The combination with the axle-box provided with a groove at its mouth, and its hinged cover provided with a rib, of a body l" of self-hardening plastic material tted in the groove to form a close joint between the two parts and adapted to receive the rib of the GEO. G. FLOYD.

In presence of- E. S. KNIGHT, M. P'. SMITH. 

